A Comfortable level to achieve for most tek divers, this course gives you that little bit of extra depth and a lot of extra common sense...Using twinsets ( or Rebreathers) and different gasses you will learn how to safely switch gasses at depth, do extended decompression dives and use stage cylinders correctly. Using a gas mixture that still allows you to safely breathe your back gas at all depth limits of this course, this will put you in line for full Trimix.
Each dive has a scoring system which both you and your instructor scores. Should you not score enough, you will be required to do more dives!
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